Method for system recovery and apparatus supporting the same
First Claim
Patent Images
1. A system recovery method, comprising:
- downloading a plurality of software images;
determining whether it is time to boot a system;
selecting a first software image to be loaded among the plurality of software images, if it is determined that it is time to boot the system;
loading the system with the first software image; and
recovering the system by a second software image used before the downloading, based on booting environmental variables of the first software image, if the loading the system with the first software image fails,wherein the booting environmental variables includes system loading failure information indicating whether the first software image has previously failed.
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Abstract
A system recovery method and an apparatus supporting the same are disclosed. A software image is downloaded, and a system is loaded with the downloaded software image, and the system is recovered by a software image used before the updating, if the system loading fails.
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Citations
22 Claims
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1. A system recovery method, comprising:
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downloading a plurality of software images; determining whether it is time to boot a system; selecting a first software image to be loaded among the plurality of software images, if it is determined that it is time to boot the system; loading the system with the first software image; and recovering the system by a second software image used before the downloading, based on booting environmental variables of the first software image, if the loading the system with the first software image fails, wherein the booting environmental variables includes system loading failure information indicating whether the first software image has previously failed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system recovery method comprising:
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determining whether it is time to boot a system; booting the system using a software image stored in a loading area while the system is being used if it is determined that it is time to boot the system; and if the booting the system fails, changing the loading area to another storage area based on booting environmental variables of the software image and rebooting the system, wherein the booting environmental variables includes system loading failure information indicating whether the software image has previously failed. - View Dependent Claims (11, 12, 13)
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14. A system recovery method comprising:
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determining whether it is time to boot a system; selecting a first software image to be loaded among a plurality of software images, if it is determined that it is time to boot the system; and booting the system using the first software image, at a first time, and booting the system using a second software, at a second time, wherein the first software image and the second software image are stored in first and second storage areas, which are set to a loading area, which is loaded for the booting the system, at the first time and second time, respectively, wherein the loading area is changed to the second storage area storing the second software image based on booting environmental variables of the first software image, and wherein the booting environmental variables includes system loading failure information indicating whether the first software image has previously failed. - View Dependent Claims (15)
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16. An apparatus for supporting system recovery, comprising:
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a plurality of storage areas which store a plurality of software images, respectively; and a boot loader which selects as a loading area a first storage area storing a first software image, among the plurality of storage areas, loads a system with the first software image when it is a predetermined time to boot a system, and, if the loading the system with the first software image fails, changes the loading area to a second storage area among the plurality of storage areas to recover the system with a second software image stored in the second storage area, wherein the boot loader changes the loading area to the second storage area storing the second software image based on booting environmental variables of the first software image, and wherein the booting environmental variables includes system loading failure information indicating whether the first software image has previously failed. - View Dependent Claims (17, 18, 19)
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20. An apparatus for supporting system recovery, comprising:
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a plurality of storage areas which store a plurality of software images, respectively; and a boot loader which, when it is a predetermined time to boot a system, selects as a first storage area as a loading area storing a first software image, from among the plurality of storage areas to load the system with the first software image, at a first time, and changes the loading area to a second storage area storing a second software image among the plurality of storage areas to load the system with the second software image, at a second time, wherein the boot loader changes the loading area to the second storage area storing the second software image based on booting environmental variables of the first software image, and wherein the booting environmental variables includes system loading failure information indicating whether the first software image has previously failed. - View Dependent Claims (21, 22)
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Specification